opensim-development – Rev 1
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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Drawing;
using System.IO;
using System.Net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.Imaging;
using OpenSim.Region.CoreModules.Scripting.DynamicTexture;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using log4net;
using System.Reflection;
using Mono.Addins;
namespace OpenSim.Region.CoreModules.Scripting.LoadImageURL
{
[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "LoadImageURLModule")]
public class LoadImageURLModule : ISharedRegionModule, IDynamicTextureRender
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private string m_name = "LoadImageURL";
private Scene m_scene;
private IDynamicTextureManager m_textureManager;
private string m_proxyurl = "";
private string m_proxyexcepts = "";
#region IDynamicTextureRender Members
public string GetName()
{
return m_name;
}
public string GetContentType()
{
return ("image");
}
public bool SupportsAsynchronous()
{
return true;
}
// public bool AlwaysIdenticalConversion(string bodyData, string extraParams)
// {
// // We don't support conversion of body data.
// return false;
// }
public IDynamicTexture ConvertUrl(string url, string extraParams)
{
return null;
}
public IDynamicTexture ConvertData(string bodyData, string extraParams)
{
return null;
}
public bool AsyncConvertUrl(UUID id, string url, string extraParams)
{
MakeHttpRequest(url, id);
return true;
}
public bool AsyncConvertData(UUID id, string bodyData, string extraParams)
{
return false;
}
public void GetDrawStringSize(string text, string fontName, int fontSize,
out double xSize, out double ySize)
{
xSize = 0;
ySize = 0;
}
#endregion
#region ISharedRegionModule Members
public void Initialise(IConfigSource config)
{
m_proxyurl = config.Configs["Startup"].GetString("HttpProxy");
m_proxyexcepts = config.Configs["Startup"].GetString("HttpProxyExceptions");
}
public void PostInitialise()
{
}
public void AddRegion(Scene scene)
{
if (m_scene == null)
m_scene = scene;
}
public void RemoveRegion(Scene scene)
{
}
public void RegionLoaded(Scene scene)
{
if (m_textureManager == null && m_scene == scene)
{
m_textureManager = m_scene.RequestModuleInterface<IDynamicTextureManager>();
if (m_textureManager != null)
{
m_textureManager.RegisterRender(GetContentType(), this);
}
}
}
public void Close()
{
}
public string Name
{
get { return m_name; }
}
public Type ReplaceableInterface
{
get { return null; }
}
#endregion
private void MakeHttpRequest(string url, UUID requestID)
{
WebRequest request = HttpWebRequest.Create(url);
if (!string.IsNullOrEmpty(m_proxyurl))
{
if (!string.IsNullOrEmpty(m_proxyexcepts))
{
string[] elist = m_proxyexcepts.Split(';');
request.Proxy = new WebProxy(m_proxyurl, true, elist);
}
else
{
request.Proxy = new WebProxy(m_proxyurl, true);
}
}
RequestState state = new RequestState((HttpWebRequest) request, requestID);
// IAsyncResult result = request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);
request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);
TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
state.TimeOfRequest = (int) t.TotalSeconds;
}
private void HttpRequestReturn(IAsyncResult result)
{
if (m_textureManager == null)
{
m_log.WarnFormat("[LOADIMAGEURLMODULE]: No texture manager. Can't function.");
return;
}
RequestState state = (RequestState) result.AsyncState;
WebRequest request = (WebRequest) state.Request;
Stream stream = null;
byte[] imageJ2000 = new byte[0];
Size newSize = new Size(0, 0);
try
{
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result);
if (response != null && response.StatusCode == HttpStatusCode.OK)
{
stream = response.GetResponseStream();
if (stream != null)
{
try
{
Bitmap image = new Bitmap(stream);
// TODO: make this a bit less hard coded
if ((image.Height < 64) && (image.Width < 64))
{
newSize.Width = 32;
newSize.Height = 32;
}
else if ((image.Height < 128) && (image.Width < 128))
{
newSize.Width = 64;
newSize.Height = 64;
}
else if ((image.Height < 256) && (image.Width < 256))
{
newSize.Width = 128;
newSize.Height = 128;
}
else if ((image.Height < 512 && image.Width < 512))
{
newSize.Width = 256;
newSize.Height = 256;
}
else if ((image.Height < 1024 && image.Width < 1024))
{
newSize.Width = 512;
newSize.Height = 512;
}
else
{
newSize.Width = 1024;
newSize.Height = 1024;
}
using (Bitmap resize = new Bitmap(image, newSize))
{
imageJ2000 = OpenJPEG.EncodeFromImage(resize, true);
}
}
catch (Exception)
{
m_log.Error("[LOADIMAGEURLMODULE]: OpenJpeg Conversion Failed. Empty byte data returned!");
}
}
else
{
m_log.WarnFormat("[LOADIMAGEURLMODULE] No data returned");
}
}
}
catch (WebException)
{
}
finally
{
if (stream != null)
{
stream.Close();
}
}
m_log.DebugFormat("[LOADIMAGEURLMODULE]: Returning {0} bytes of image data for request {1}",
imageJ2000.Length, state.RequestID);
m_textureManager.ReturnData(
state.RequestID,
new OpenSim.Region.CoreModules.Scripting.DynamicTexture.DynamicTexture(
request.RequestUri, null, imageJ2000, newSize, false));
}
#region Nested type: RequestState
public class RequestState
{
public HttpWebRequest Request = null;
public UUID RequestID = UUID.Zero;
public int TimeOfRequest = 0;
public RequestState(HttpWebRequest request, UUID requestID)
{
Request = request;
RequestID = requestID;
}
}
#endregion
}
}